"The SSM2164 chip contains four independent voltage controlled amplifiers (VCAs) in a single package. High performance (100 dB dynamic range, 0.02% THD) is provided at a very low cost-per-VCA, resulting in excellent value for cost sensitive gain control applications.
Each VCA offers current input and output for maximum design flexibility, and a ground referenced -33 mV/dB control port."

A-127 + Expander

This is probably the Doepfer filter that i use the most, and the brand new re-design also promises to reduces the noise floor and the distortion clearly, according to Doepfer.
(The noise that i never really noticed before...)